I checked the option to open always the last opened file, which works fine if TheGuide uses the registry to save its settings. If TheGuide uses the portable INI file, than opening the last used file fails with an error message, that the file can't be found!
This error exists since a long time, but I "learned" to ignore it.
Moving to a new computer, TheGuide suddenly didn't use the existing INI file, switched back to the registry and the error wasn't raised anymore, but came back after switching back to the INI file.
Taking a look at the INI file I saw in the "Recent File List" section something like:
Since TheGuide isn't able to find the existing file, I fear "PortableAppsBaseDir" isn't resolved in the INI file before TheGuide starts by the platform/installer/what ever.
Any chance for a fix?